Biomedical subjects
Publications and source records attributed to J Banner.
This article describes the process from inception to successful operation of a case management model of a community-based multiple sclerosis clinic. The article includes information regarding the pathophysiology, diagnosis, and clinical manifestations of multiple sclerosis. The assessment, planning, and intervention stages of the process are explained, and a case study of one clinic patient is provided.
An additive factors method (AFM) experiment was undertaken to determine whether the preprocessing and identification stages of information processing are implicated in the slowing of reaction time (RT) by hypoxia. The subjects (n = 14) responded at two levels of light intensity to pairs of lines that differed in length while breathing a low oxygen mixture that produced arterial oxyhaemoglobin saturations ranging between 64%-66%. The results showed a relatively large interaction between light intensity and hypoxia that was interpreted as evidence for slowing of the preprocessing stage. Differences in line length were plotted in terms of Crossman's confusion function and relatively small interactions with both hypoxia and light intensity were found, reflecting increases in slope. The light intensity x confusion level interaction was interpreted as evidence that AFM assumptions may not have been met completely in this experiment. This leads to the possibility that hypoxia slowed the identification stage indirectly rather than directly, although the latter hypothesis cannot be ruled out entirely at present. It is argued that visual slowing probably plays an important role in the disruption of perceptual-motor tasks by hypoxia.
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